OP Return is a lot more useful even tho no discount. Easier to parse. Should solve itself thru market forces? I could be wrong- combining removing OP Return limits while adding a witness limit would be even better. Like a practical compromise between Knots and Core.
Discussion
Limits don't do anything but protect the user from making unintended transactions. Remove them all of it were up to me. Make the code base smaller, more maintainable and less opinionated.